/**
 * Copyright 2011 Joe Choi, All rights reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package tec.data.structure;

import tao.data.structure.Iterator;

/**
 * @author Joe Choi
 */
public interface VariableSet<V> {
	public Iterator<V> iterate();
	public VariableSet<V> add(V... e);
	public VariableSet<V> remove(V... e);
	public long degree();
	public boolean contains(V e);
}